CVE-2026-23112 (GCVE-0-2026-23112)

Vulnerability from cvelistv5 – Published: 2026-02-13 13:29 – Updated: 2026-08-05 12:20
VLAI
Title
nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 0b9981751be14b59b4473383c731c833738aebdb (git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 42afe8ed8ad2de9c19457156244ef3e1eca94b5d (git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 1385be357e8acd09b36e026567f3a9d5c61139de (git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < dca1a6ba0da9f472ef040525fab10fd9956db59f (git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 19672ae68d52ff75347ebe2420dde1b07adca09f (git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < ab200d71553bdcf4de554a5985b05b2dd606bc57 (git)
Affected: 872d26a391da92ed8f0c0f5cb5fef428067b7f30 , < 52a0a98549344ca20ad81a4176d68d28e3c05a5c (git)
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Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.200 , ≤ 5.15.* (semver)
Unaffected: 6.1.163 , ≤ 6.1.* (semver)
Unaffected: 6.6.124 , ≤ 6.6.* (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V4.0 (custom)
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Show details on NVD website
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Guard sg_idx, remaining\\nentries, and sg-\u003elength/offset before building the bvec.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nnvmet-tcp: a\u00f1adir comprobaciones de l\u00edmites en nvmet_tcp_build_pdu_iovec\\n\\nnvmet_tcp_build_pdu_iovec() podr\u00eda exceder cmd-\u0026gt;req.sg cuando una longitud o desplazamiento de PDU excede sg_cnt y luego usar valores sg-\u0026gt;length/offset err\u00f3neos, lo que lleva a _copy_to_iter() GPF/KASAN. Proteger sg_idx, las entradas restantes y sg-\u0026gt;length/offset antes de construir el 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\"Patch\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-253495.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-02T17:11:59+00:00",
      "cve": "CVE-2026-23112",
      "id": "CVE-2026-23112",
      "initial_release_date": "2026-02-13T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23112.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-24T02:39:34Z",
      "cve": "CVE-2026-23112",
      "id": "CVE-2026-23112",
      "initial_release_date": "2026-02-14T00:24:16Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "586",
      "product_status:known_not_affected": "34",
      "product_status:recommended": "318",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23112",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23112.json",
      "version": "25"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.